<template>
  <div class="app-container">
    <el-form :model="queryParams" ref="queryForm" :inline="true" v-show="showSearch" label-width="68px">
      <el-form-item label="分类名称" prop="name">
        <el-input
          v-model="queryParams.name"
          placeholder="请输入分类名称"
          clearable
          size="small"
          @keyup.enter.native="handleQuery"
        />
      </el-form-item>
      <el-form-item label="是否显示" prop="showStatus">
        <el-select v-model="queryParams.showStatus" placeholder="请选择是否显示" clearable size="small">
          <el-option
            v-for="dict in showStatusOptions"
            :key="dict.dictValue"
            :label="dict.dictLabel"
            :value="dict.dictValue"
          />
        </el-select>
      </el-form-item>
      <el-form-item label="计量单位" prop="productUnit">
        <el-input
          v-model="queryParams.productUnit"
          placeholder="请输入计量单位"
          clearable
          size="small"
          @keyup.enter.native="handleQuery"
        />
      </el-form-item>
      <el-form-item label="商品数量" prop="productCount">
        <el-input
          v-model="queryParams.productCount"
          placeholder="请输入商品数量"
          clearable
          size="small"
          @keyup.enter.native="handleQuery"
        />
      </el-form-item>
      <el-form-item>
        <el-button type="primary" icon="el-icon-search" size="mini" @click="handleQuery">搜索</el-button>
        <el-button icon="el-icon-refresh" size="mini" @click="resetQuery">重置</el-button>
      </el-form-item>
    </el-form>

    <el-row :gutter="10" class="mb8">
      <el-col :span="1.5">
        <el-button
          type="primary"
          plain
          icon="el-icon-plus"
          size="mini"
          @click="handleAdd"
          v-hasPermi="['category:category:add']"
        >新增
        </el-button>
      </el-col>
      <right-toolbar :showSearch.sync="showSearch" @queryTable="getList"></right-toolbar>
    </el-row>

    <el-table
      v-loading="loading"
      :data="categoryList"
      row-key="id"
      :tree-props="{children: 'children', hasChildren: 'hasChildren'}"
    >
      <el-table-column label="分类名称" prop="name"/>
      <el-table-column label="层级" align="center" prop="level" :formatter="levelFormat"/>
      <el-table-column label="是否显示" align="center" prop="showStatus" :formatter="showStatusFormat"/>
      <el-table-column label="排序" align="center" prop="sort"/>
      <el-table-column label="图标地址" align="center" prop="icon"/>
      <el-table-column label="计量单位" align="center" prop="productUnit"/>
      <el-table-column label="操作" align="center" class-name="small-padding fixed-width">
        <template slot-scope="scope">
          <el-button
            size="mini"
            type="text"
            icon="el-icon-edit"
            @click="handleUpdate(scope.row)"
            v-hasPermi="['category:category:edit']"
          >修改
          </el-button>
          <el-button v-if="scope.row.level!=3"
                     size="mini"
                     type="text"
                     icon="el-icon-plus"
                     @click="handleAdd(scope.row)"
                     v-hasPermi="['category:category:add']"
          >新增
          </el-button>
          <el-button
            size="mini"
            type="text"
            icon="el-icon-delete"
            @click="handleDelete(scope.row)"
            v-hasPermi="['category:category:remove']"
          >删除
          </el-button>
        </template>
      </el-table-column>
    </el-table>

    <!-- 添加或修改商品分类对话框 -->
    <el-dialog :title="title" :visible.sync="open" v-if="open" width="500px" append-to-body>
      <el-form ref="form" :model="form" :rules="rules" label-width="80px">

        <el-form-item label="父分类" prop="parentId">
          <treeselect v-model="form.parentId" :options="categoryOptions" :normalizer="normalizer"
                      placeholder="请选择父分类id"/>
        </el-form-item>
        <el-form-item label="分类名称" prop="name">
          <el-input v-model="form.name" placeholder="请输入分类名称"/>
        </el-form-item>

        <el-form-item label="是否显示" prop="showStatus">
          <el-radio-group v-model="form.showStatus">
            <el-radio
              v-for="dict in showStatusOptions"
              :key="dict.dictValue"
              :label="parseInt(dict.dictValue)"
            >{{dict.dictLabel}}
            </el-radio>
          </el-radio-group>
        </el-form-item>
        <el-form-item label="排序" prop="sort">
          <el-input v-model="form.sort" type="number" placeholder="请输入排序"/>
        </el-form-item>
        <el-form-item label="图标地址">
          <imageUpload :maxCount="1" v-model="form.icon"/>
        </el-form-item>
        <el-form-item label="计量单位" prop="productUnit">
          <el-input v-model="form.productUnit" placeholder="请输入计量单位"/>
        </el-form-item>
      </el-form>
      <div slot="footer" class="dialog-footer">
        <el-button :loading="buttonLoading" type="primary" @click="submitForm">确 定</el-button>
        <el-button @click="cancel">取 消</el-button>
      </div>
    </el-dialog>
  </div>
</template>

<script>
  import {
    listCategory,
    getCategory,
    delCategory,
    addCategory,
    updateCategory,
    exportCategory
  } from "@/api/mall/pms/category";
  import Treeselect from "@riophae/vue-treeselect";
  import "@riophae/vue-treeselect/dist/vue-treeselect.css";
  import ImageUpload from '@/components/ImageUpload';

  export default {
    name: "Category",
    components: {
      ImageUpload,
      Treeselect
    },
    data() {
      return {
        //按钮loading
        buttonLoading: false,
        // 遮罩层
        loading: true,
        // 显示搜索条件
        showSearch: true,
        // 商品分类表格数据
        categoryList: [],
        // 商品分类树选项
        categoryOptions: [],
        // 弹出层标题
        title: "",
        // 是否显示弹出层
        open: false,
        // 层级字典
        levelOptions: [],
        // 是否显示[0-不显示，1显示]字典
        showStatusOptions: [],
        // 查询参数
        queryParams: {
          name: null,
          showStatus: null,
          productUnit: null,
          productCount: null
        },
        // 表单参数
        form: {},
        // 表单校验
        rules: {
          name: [
            {required: true, message: "分类名称不能为空", trigger: "blur"}
          ],
          parentId: [
            {required: true, message: "父分类id不能为空", trigger: "blur"}
          ],
          showStatus: [
            {required: true, message: "是否显示不能为空", trigger: "blur"}
          ],
        }
      };
    },
    created() {
      this.getList();
      this.getDicts("mall_category_level").then(response => {
        this.levelOptions = response.data;
      });
      this.getDicts("mall_nav_status").then(response => {
        this.showStatusOptions = response.data;
      });
    },
    methods: {
      /** 查询商品分类列表 */
      getList() {
        this.loading = true;
        listCategory(this.queryParams).then(response => {
          this.categoryList = this.handleTree(response.data, "id", "parentId");
          this.loading = false;
        }).catch(() => {
          this.loading = false;
        });
      },
      /** 转换商品分类数据结构 */
      normalizer(node) {
        if (node.children && !node.children.length) {
          delete node.children;
        }
        return {
          id: node.id,
          label: node.name,
          children: node.children
        };
      },
      /** 查询商品分类下拉树结构 */
      getTreeselect() {
        listCategory().then(response => {
          let list = [];
          response.data.forEach(e => {
            if (e.level != 3) {
              list.push(e)
            }
          })
          this.categoryOptions = [];
          const data = {id: 0, name: '顶级节点', children: []};
          data.children = this.handleTree(list, "id", "parentId");
          this.categoryOptions.push(data);
        });
      },
      // 层级字典翻译
      levelFormat(row, column) {
        return this.selectDictLabel(this.levelOptions, row.level);
      },
      // 是否显示[0-不显示，1显示]字典翻译
      showStatusFormat(row, column) {
        return this.selectDictLabel(this.showStatusOptions, row.showStatus);
      },
      // 取消按钮
      cancel() {
        this.open = false;
        this.reset();
      },
      // 表单重置
      reset() {
        this.form = {
          id: null,
          name: null,
          parentId: null,
          level: null,
          showStatus: null,
          sort: null,
          icon: null,
          productUnit: null,
          productCount: null
        };
        this.resetForm("form");
      },
      /** 搜索按钮操作 */
      handleQuery() {
        this.getList();
      },
      /** 重置按钮操作 */
      resetQuery() {
        this.resetForm("queryForm");
        this.handleQuery();
      },
      /** 新增按钮操作 */
      handleAdd(row) {
        this.reset();
        this.form.showStatus = 1
        this.getTreeselect();
        if (row != null && row.id) {
          this.form.parentId = row.id;
        } else {
          this.form.parentId = 0;
        }
        this.open = true;
        this.title = "添加商品分类";
      },
      /** 修改按钮操作 */
      handleUpdate(row) {
        this.loading = true;
        this.reset();
        this.getTreeselect();
        if (row != null) {
          this.form.parentId = row.id;
        }
        getCategory(row.id).then(response => {
          this.loading = false;
          this.form = response.data;
          this.open = true;
          this.title = "修改商品分类";
        }).catch(() => {
          this.loading = false;
        });
      },
      /** 提交按钮 */
      submitForm() {
        this.$refs["form"].validate(valid => {
          if (valid) {
            this.buttonLoading = true;
            if (this.form.id != null) {
              updateCategory(this.form).then(response => {
                this.buttonLoading = false;
                this.msgSuccess("修改成功");
                this.open = false;
                this.getList();
              }).catch(() => {
                this.buttonLoading = false;
              });
            } else {
              addCategory(this.form).then(response => {
                this.buttonLoading = false;
                this.msgSuccess("新增成功");
                this.open = false;
                this.getList();
              }).catch(() => {
                this.buttonLoading = false;
              });
            }
          }
        });
      },
      /** 删除按钮操作 */
      handleDelete(row) {
        this.$confirm('是否确认删除商品分类编号为"' + row.id + '"的数据项?', "警告", {
          confirmButtonText: "确定",
          cancelButtonText: "取消",
          type: "warning"
        }).then(() => {
          this.loading = true;
          return delCategory(row.id);
        }).then(() => {
          this.loading = false;
          this.getList();
          this.msgSuccess("删除成功");
        }).catch(() => {
          this.loading = false;
        });
      }
    }
  };
</script>
